MESON Chess Problem Database

Problem Display
PID: 7423 (8/1K6/8/1kP5/1pN5/1Q6/8/8 w - - 0 1)

Zimmer, Eligiusz

StrateGems, 1999

8/1K6/8/1kP5/1pN5/1Q6/8/8

#2

4 + 2

5454 Near Snap 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Kc7?
      • 1...Ka6
        • 2.Qa4#
      • 1...Kxc5!
    • 1.Sb2?
      • 1...Ka5
        • 2.Qa4#
      • 1...Kxc5!
    • 1.Se3?
      • 1...Kxc5
        • 2.Qd5#
      • 1...Ka5!
    • 1.Sd6+?
      • 1...Ka5
        • 2.Qa2#
      • 1...Kxc5!
  • Keys
    • 1.Sb6!
      • 1...Ka5
        • 2.Qa4#
      • 1...Kxc5
        • 2.Qd5#

Anticipated by 140898(1971)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XP(C)
    • Try
      • S(B);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XP(C)
    • Try
      • S(B);
      • Vars
        • K(b);N_SPINP(a),OGATEB,P-FLIGHT,XP(C)::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XP(C)
  • Actual
    • S(B);
    • Vars
      • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • K(b);N_SPINP(a),OGATEB,P-FLIGHT,XP(C)::QAR1(A)
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